浅埋深大采高工作面矿压规律与影响因素分析*曹健1,师世图1,闫祎炜1,高斌1,段军1,王汉元2,管隆刚3(1.内蒙古科技大学矿业与煤炭学院,内蒙古包头014010;2.内蒙古自治区地质环境监测院,呼和浩特010013;3.陕西陕煤榆北煤业有限公司,陕西榆林719054)摘要:为研究浅埋深大采高工作面矿压规律,分析其主要影响因素,以大柳塔煤矿1-2上煤层开采为背景,结合统计分析、物理模拟、数值计算与工程实践的方法,掌握了工作面初次来压与周期来压的矿压显现规律,揭示了煤层采高、埋深对来压规律的影响。研究表明,来压期间支架工作阻力随采高的增大而增大,动载系数、周期来压步距与采高没有直接的关系。来压期间支架平均工作阻力、动载系数随埋深的增大而增大,周期来压步距与埋深没有直接的关系。1-2上煤层工作面开采的初次来压步距为60m,平均周期来压步距为12m,来压期间支架工作阻力一般在6500~8500kN,少数支架工作阻力会升到9300kN左右,工作面支护效果良好。关键词:浅埋深大采高;矿压显现;影响因素;支架载荷;来压步距中图分类号:TD323文献标志码:A文章编号:1008-8725(2023)02-034-05AnalysisonRockPressureLawandInfluenceFactorsofLargeMiningHeightFaceinShallowCoalSeamCAOJian1,SHIShitu1,YANYiwei1,GAOBin1,DUANJun1,WANGHanyuan2,GUANLonggang3(1.InstituteofMiningEngineering,InnerMongoliaUniversityofScienceandTechnology,Baotou014010,China;2.InnerMongoliaInstituteofGeologicEnvironmentMonitoring,Huhhot010013,China;3.ShaanxiCoalGroupYubeiCoalIndustryCo.,Ltd.,Yulin719054,China)Abstract:Inordertostudytheroofweightinganditsinfluencefactorsoflargeminingheightlongwallfaceinshallowcoalseam,takingNo.1-2upperseaminDaliutacoalmineasthebackground,combiningwiththemethodsofstatisticalanalysis,physicalsimulation,numericalcalculationandengineeringpractice,thefirstandperiodicroofweightingbehavioroflongwallfaceisobtained,andtheinfluenceoftheminingheightandburieddepthonroofweightingisrevealed.Studiesshowthattheworkingresistanceincreaseswiththeincreaseoftheminingheightduringroofweighting,andthereisnodirectrelationshipbetweenthedynamicloadcoefficientandtheperiodicroofweightingintervalandtheminingheight.Theaverageworkingresistanceanddynamicloadfactorincrea...